Abstract : The object of the invention is a generator of periodic sequence of bundles of square pulses with regulatable length and intervals between them which contains a master generator connected up to a conversion system controlling a shaping trigger and a feedback circuit which serves for dropping (throwing out) the count. For the purpose of shaping a series of pulses with mutually independent length of the pulses and the intervals between them issuing into one or several channels, and the simplification of the distribution of the pulses over the channels, in it there is used a commutating register and pairs of systems of matching connected up to it the number of which is equal to the number of independently regulatable pulses and intervals between them, with the outputs of each pair of systems of matchings connected up through systems 'ILI' to one shaping trigger, and in the distribution of the pulses over the different channels the outputs of each pair of systems of matchings are connected up to separate shaping triggers. (Author)